pvlib · kandersolar · Jul 31, 2025 · Jul 2, 2025 · Jul 2, 2025 · Jul 3, 2025
diff --git a/docs/sphinx/source/reference/modelchain.rst b/docs/sphinx/source/reference/modelchain.rst
@@ -115,12 +115,3 @@ on the information in the associated :py:class:`~pvsystem.PVSystem` object.
    modelchain.ModelChain.infer_temperature_model
    modelchain.ModelChain.infer_losses_model
 
-Functions
----------
-
-Functions for power modeling.
-
-.. autosummary::
-   :toctree: generated/
-
-   modelchain.get_orientation
diff --git a/docs/sphinx/source/whatsnew/v0.13.1.rst b/docs/sphinx/source/whatsnew/v0.13.1.rst
@@ -10,6 +10,8 @@ Breaking Changes
 
 Deprecations
 ~~~~~~~~~~~~
+* Deprecate :py:func:`~pvlib.modelchain.get_orientation`. Removal scheduled for
+  0.14.0. (:pull:`2691`)
 
 
 Bug fixes
@@ -44,3 +46,4 @@ Maintenance
 Contributors
 ~~~~~~~~~~~~
 * Elijah Passmore (:ghuser:`eljpsm`)
+* Rajiv Daxini (:ghuser:`RDaxini`)
diff --git a/pvlib/modelchain.py b/pvlib/modelchain.py
@@ -18,6 +18,8 @@
 from pvlib.pvsystem import _DC_MODEL_PARAMS
 from pvlib.tools import _build_kwargs
 
+from pvlib._deprecation import deprecated
+
 # keys that are used to detect input data and assign data to appropriate
 # ModelChain attribute
 # for ModelChain.weather
@@ -59,6 +61,13 @@
 )
 
 
+@deprecated(
+    since="0.13",
+    removal="0.14",
+    name="pvlib.modelchain.get_orientation",
+    alternative=None,
+    addendum=None,
+)
 def get_orientation(strategy, **kwargs):
     """
     Determine a PV system's surface tilt and surface azimuth

diff --git a/tests/test_modelchain.py b/tests/test_modelchain.py
@@ -1785,11 +1785,6 @@ def test_invalid_models(model, sapm_dc_snl_ac_system, location):
         ModelChain(sapm_dc_snl_ac_system, location, **kwargs)
 
 
-def test_bad_get_orientation():
-    with pytest.raises(ValueError):
-        modelchain.get_orientation('bad value')
-
-
 # tests for PVSystem with multiple Arrays
 def test_with_sapm_pvsystem_arrays(sapm_dc_snl_ac_system_Array, location,
                                    weather):